Easy installation - Good protection

I bought the tank latch externally of Amazaon.
There are, in my opinion, little parts in the package in there, quite clearly and not equal slaying. The assembly instructions I need to use virtually no, because the structure of the bar was self-explanatory ('m not a craftsman).
The thing looks good and feels safe.
The only drawback, as I have the beams used in the door, was a gap of almost 1 centimeter between the door and bar. So I had two options, either looking front facing the castle, or the bar has a gap between the door. I opted for the columns, screw the fixed I just each set a small piece of wood in between, the problem was solved for me.
Tool that you need:
- Screwdriver
- Hole Saw (I used 50 mm, although the instructions stated 51-56, fit properly)
- Spirit level
- Wood drill (possibly metal and stone, depending on the situation)
- Saw (correct position around the exterior protection to trim)
- Pen for marking the holes
Ruler (or similar)